EXPLORING NEW REFRIGERATION TECHNOLOGY THROUGH NATURE.

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• Swaziland is a small country, in Southern Africa,
  bordered by South Africa and Mozambique.

• Population 1,185,000

• The head of state is the king, currently King
  Mswati III

• Most Swazis live in rural homesteads, the
  principal occupation is either subsistence
  farming or livestock herding

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• Swaziland ranks as a lower middle income country,
  but it's estimated that 69 of the population
  lives in poverty

• Swaziland is critically affected by the HIV and
  AIDS pandemic, and has the highest HIV infection
  rate in the world (26 of all adults)

• Tuberculosis is also a significant problem, with
  an 18 mortality rate

• Swaziland has the lowest life expectancy in the
  world at 31.88 years

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PALFRIDGE COMMITMENTExploring future
refrigeration technology in synergy with nature
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THE NEED FOR A SUSTAINABLE SOLUTION FOR
REFRIGERATING VACCINES , FOOD AND BEVERAGES IN
DEVELOPING COUNTRIES
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GTZ Terms of Reference

• To preserve medicine , food beverages for human
  consumption at high ambient temperatures ( 48c )
  using solar energy without the use of chemical
  storage batteries.
• Key Design Criteria
• Sustainability
• Simplicity
• Safety
• Reliability
• Robustness

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The Solar therm Range
Commercial Merchandiser (LC 86)
Medical Unit (MC 72)
Domestic Unit (LS 150)
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Operation of the Solar therm Units

• During sunlight hours, energy from the sun is
  converted into electrical energy, which is used
  to cool the product. Any excess energy is stored
  in a ballast load ( Phase Change Material ) and
  is used during low light low energy conditions.
• The cooling system has no battery storage and
  comprises of the refrigerator and 2 x 90 watt
  Photovoltaic panels

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Operating Principles
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MC72-Medical Unit

• This equipment is designed for hospitals,
  clinics, and ambulances. This Chest Type unit
  comprises of two compartments
• -Vaccine storage
• -Freezer compartment.
• A mechanical damper regulates the amount of
  cooling and keeps it between 2C and 8C.
• The dampers and controller are preset to achieve
  optimum vaccine temperatures in all ambient
  temperature conditions.
• Ample insulation also allows for vaccines and
  medicines to be safely stored for extended
  periods of time in low light conditions.

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Performance Characteristics at 48C ambient and
75Rh
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LC86-Commercial Merchandiser

• This is a commercial merchandiser comprising of
  controller and BD35k compressor. Beverages are
  stored in a basket suspended from the top of the
  cabinet.
• The unit has a ballast load. The remainder of the
  space is filled with product. The controller is
  pre-set to achieve optimum beverage temperatures
  in all ambient temperature conditions.

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Performance Characteristics at 48C ambient and
75Rh
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LS150-Domestic

• This unit is designed for the storage of fresh
  food, and is aimed primarily at rural homesteads
  and areas with intermittent power supply from the
  national grid.
• It is a single door design with separate fridge
  and freezer compartments that are able to
  maintain temperatures from 2C to 9C.
• Ample insulation also allows for food to be
  safely stored for extended periods of time in low
  light conditions.
• The controller is preset to achieve optimum fresh
  food temperatures in all ambient temperature
  conditions.

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Performance Characteristics at 43C ambient and
75Rh
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COST OF REFRIGERATORS
MODEL BOS Items BOS Cost - Refrigerator Cost - Total Cost -
LC 86 Merchandiser 2 x 90w panels 10m x 4mm² Cable Mounting Brackets Elect. Plugs Acc. 550 808 1358
MT 150 Domestic 2 x 90w panels 10m x 4mm² Cable Mounting Brackets Elect. Plugs Acc. 550 924 1474
MC 72 Medical 2 x 90w panels 10m x 4mm² Cable Mounting Brackets Elect. Plugs Acc. Ice Packs 550 1089 1639
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• TESTING APPROVAL
• Two phases viz
• Laboratory as per WHO PQS specs Simulated
  Load Power supply to unit.
• IEC 60335 1/2/24 Safety Specs.
• SANS 15502 Performance
• CE Declaration
• Field operation tested in situation at various
  countries in both hemispheres in all ambients.
• - Refrigerator performance data collected
  using remote radio link.

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Data Collection

• Performance data ( temperature power
  consumption ) is logged electronically.
• Alarms ( door open etc ) also logged.
• Data is transmitted daily via the telephone
  network to a website.
• The website collates the data from all the
  various loggers worldwide and presents it in a
  readable pictorial format.
• Anyone can ascess the website and review the test
  data.

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Communication Global Positioning

• Data is transferred via GPRS or MMS Simply
  Cellular network.
• Data is transferred to a satellite via APRS and
  the location is transmitted to the website.
• Palfridge has the co-ordinates of every
  refrigerator and know its operating status !!!!

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Installation Maintenance

• Accessory Specs
• 2 x 90 watt monocrystalline panels.
• Roof mounting brackets and fixtures.
• Intermediate 4mm² x 10m cable and plug.
• Solar panel placement directions.
• Operating Instructions.
• Spare parts exploded view and ordering info.

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Installation Procedure
1.Open the cover with a screw driver.
2. Undo nylon screw cap and insert cable
3. Insert and push cable
4. Lift clip using screw driver, push cable in
and release clip.
6. Close cover
5. Screw back nylon cap to tighten cable. Repeat
procedure for connecting other polarity.
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Installing Fridge to Solar Modules
Male Hella
Female Hella
Connect male hella to female hella
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Installing Fridge to Solar Modules
Male Hella
Female Hella
Connect male hella to female hella
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Wiring Schematic with Data Logger
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Spare Parts

• The following components are replaceable

SPARE PARTS WITH STOCK CODES SPARE PARTS WITH STOCK CODES SPARE PARTS WITH STOCK CODES SPARE PARTS WITH STOCK CODES SPARE PARTS WITH STOCK CODES SPARE PARTS WITH STOCK CODES SPARE PARTS WITH STOCK CODES
Model Component Component Component Component Component Component
Model Compressor Fan Damper Gasket Controller Hinge
MC72 010085 073120 909275 131005 071760 150005
LC86 010085 073120  - 131005 071760 150005
LS150 010085 073120 -  130017 071760 - 
Compressor
Condenser
Gasket
Fan
Electronic Controller
Hinge
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Troubleshooting Guide